I'm all for doing things "by hand", but this solution introduces a single point of failure. If the colo company has networking issues you'll lose all your traf

I'm all for doing things "by hand", but this solution introduces a single point of failure. If the colo company has networking issues you'll lose all your traffic. And of course doing HA / load-balancing across data-centers is hard. Ideally you'd use haproxy to route traffic to two distinct backends - but if the proxy is down your traffic gets lost. Simpler solutions are possible, but to do it properly would require your own IP ranges/BGP etc. (Some people use static sites and use DNS for failover, but I think we all agree that's a terrible solution.)